<?php

require_once 'HTMLPurifier/AttrTransform.php';

/**
 * Pre-transform that changes deprecated bgcolor attribute to CSS.
 */
class HTMLPurifier_AttrTransform_BgColor
extends HTMLPurifier_AttrTransform {

	function transform($attr, $config, &$context) {
		
		if (!isset($attr['bgcolor'])) return $attr;
		
		$bgcolor = $this->confiscateAttr($attr, 'bgcolor');
		// some validation should happen here
		
		$this->prependCSS($attr, "background-color:$bgcolor;");
		
		return $attr;
		
	}
	
}

